文献类型：期刊文献

英文题名：Synthesis and characterization of silica microspheres functionalized with porphyrin monolayer

作者：Li, Xiangqing[1]; Zhang, Line[1]; Mu, Jin[1]

机构：[1]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2006

卷号：253

期号：2

起止页码：525

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20065110310193);WOS:【SCI-EXPANDED(收录号:WOS:000242647800022)】；

语种：英文

外文关键词：silica microspheres; porphyrin; composite; assembly; photophysical properties

摘要：A new type of inorganic and organic composite (SiO2-MPS-TAPPI), oppositely charged meso-tetra-(4-trimethylaminophenyl)porphyrin iodide (TAPPI) bonded on the surface of silica microspheres coated with mercaptopropyltrimethoxysilane (NIPS), was prepared by self-assembly method. The composite was tested by TEM, XRD and TG. The TEM images show that SiO2-MPS microspheres in the composite are uniform. There are linkages among some different SiO2-MPS microspheres. The XRD measurement bears out that the composite structure is the same with SiO2-MPS. TG curves show that thermal stability of TAPPI assembled onto SiO2-MPS microspheres is higher than that of TAPPI. Solid UV diffusion reflection spectra and fluorescence spectra are used to investigate the photophysical properties of the SiO2-MPS-TAPPI composite. It is showed that the spectra of the composite exhibit significant enhancement of the spectra range. The strong interaction between TAPPI and SiO,-MPS in the composite is responsible for the different spectra. (c) 2005 Elsevier B.V. All rights reserved.